/Engine/Source/Runtime/UMG/Public/Blueprint/WidgetBlueprintLibrary.h
Draws a hermite spline.
static void DrawSpline ( [FPaintContext](API\Runtime\UMG\Blueprint\FPaintContext) & Context, FVector2D Start, FVector2D StartDir, FVector2D End, FVector2D EndDir, [FLinearColor](API\Runtime\Core\Math\FLinearColor) Tint, float Thickness )